---
title: "Salesforce Spring '26 Release: The Ultimate Developer's Guide"
description: "A deep dive into the Salesforce Spring '26 release features: Agentforce, Data 360, Agent Script, Apex Cursors, Named Query API, and LWC innovations with code samples."
date: "2026-03-26"
author: "Jayesh Jain"
category: "Salesforce"
tags: ["Salesforce", "Spring 26", "Agentforce", "Data 360", "Apex", "LWC", "Named Query API", "Agent Script"]
keywords: "Salesforce Spring 26, Agentforce, Data 360, Agent Script, Apex Cursors, Named Query API, GraphQL Mutations LWC, RunRelevantTests, Salesforce Developer Guide"
featuredImage: "/blog/salesforce-spring-26-release-highlights.png"
cta: "Master the Agentic Enterprise with Tirnav"
ctaDescription: "Our experts can help you leverage Agentforce and Data 360 to transform your business. Let's build your AI future."
---

# Salesforce Spring '26: The Dawn of the Agentic Enterprise

The Salesforce Spring '26 release represents a seismic shift in the ecosystem, moving from assistive AI Copilots to autonomous **Agentforce** agents. This release is a technical "gobstopper," packed with features that redefine how we build on the platform.

From the rebranding of Data Cloud to **Data 360** to the introduction of **Agent Script**, we are witnessing the birth of the **Agentic Enterprise**.

---

---

## 1. Predictable Autonomy with Agent Script (Beta)

While LLMs are powerful due to their variability, enterprise software demands predictability. **Agent Script** is a new, declarative YAML-like language designed to provide strict structure to agents.

### Why it matters:
It allows you to define "guardrails" using a series of blocks (System, Variables, Language, Topics) that dictate how an agent reasons and which actions it can take.

**Agent Script Example (my_agent.agent):**

```yaml
system:
  instructions: |
    You are a professional support agent. 
    Always verify the customer's identity before sharing order details.
variables:
  customer_status: "Guest"
language:
  default: "en-US"
topics:
  - name: "Order Support"
    description: "Handles questions about order status and tracking."
    instructions: "If customer provides an Order ID, call the 'GetOrderStatus' action."
    actions:
      - "GetOrderStatus"
```

---

## 2. High-Performance Data: Named Query API (GA)

The **Named Query API** is now Generally Available, offering a high-performance alternative to traditional data retrieval methods. It allows you to define and expose custom SOQL queries as scalable REST actions.

### Syntax & Usage

When you create a Named Query API, it is accessible via a simple GET request. Parameters are passed as URI query parameters.

**Endpoint Syntax:**
GET /services/data/v66.0/named/query/NQ_API_NAME?param_name=param_value

### Supported Parameter Types
The API supports a wide range of literal types for parameters, ensuring flexibility across different data models:
- **String**: name=Acme
- **Date/Datetime**: closedate=2025-10-14 or date=2025-10-14T09:00:00-07:00
- **Date Formulas**: createddate=TODAY or LAST_N_DAYS:10
- **Numeric**: quantity=36 or amount=10.99
- **Boolean**: doNotCall=false
- **Multi-Currency**: amount=USD20000

### Real-World Example
Suppose you have a Named Query named Get_Account_Details_FromName. Here is how you would invoke it and what you can expect in return.

**Example Request:**
/services/data/v66.0/named/query/Get_Account_Details_From_Name?name=Acme

**Example Response Body:**
```json
{
    "totalSize": 1,
    "done": true,
    "records": [
        {
            "attributes": {
                "type": "Account",
                "url": "/services/data/v66.0/sobjects/Account/001Ws00003cPDMRIA4"
            },
            "Name": "Acme",
            "Description": "A trendy dining group...",
            "Phone": "214-555-1010",
            "Website": "www.urbaneats.com",
            "BillingAddress": {
                "city": "Dallas",
                "state": "TX"
            }
        }
    ]
}
```

---

## 3. Mastering Large Datasets: Apex Cursors (GA)

Managing large SOQL results in asynchronous Apex just got easier. The **Cursor Class** allows you to store a query in the server cache and access it in precise chunks.

- **Scale**: Up to 50 million records.
- **Consistency**: The PaginationCursor class ensures that page sizes remain consistent even if records are deleted between fetches.

**Apex Cursor Example:**

```java
// Create a cursor for 1M+ records
Database.Cursor myCursor = Database.getCursor('SELECT Id, Name FROM Large_Object__c');

// Fetch first 200 records
List<Large_Object__c> firstChunk = myCursor.fetch(0, 200);

// Fetch next 200 records from a different position
List<Large_Object__c> nextChunk = myCursor.fetch(200, 200);
```

---

## 4. Smarter Deployments: RunRelevantTests (Beta)

Tired of waiting for 1,000 unit tests to run for a one-line change? **RunRelevantTests** uses dependency graphs to discover and execute only the tests connected to your payload.

You can now explicitly link tests to classes using the testFor parameter in the @isTest annotation:

```java
@isTest(testFor='OrderController')
public class OrderControllerTest {
    @isTest(critical=true) // Mark as critical to always run
    static void testOrderCreation() {
        // Test logic
    }
}
```

---

## 5. LWC Innovations: GraphQL Mutations & Complex Logic

The boundary between server-side and client-side logic continues to blur with major LWC updates.

### GraphQL Mutations
We now have full imperative support for creation, updates, and deletions via the executeMutation adapter.

**LWC GraphQL Mutation Example:**

```javascript
import { gql, executeMutation } from 'lightning/graphql';

const CREATE_ACCOUNT = gql`
  mutation CreateAcc($input: AccountCreateInput!) {
    uiapi {
      AccountCreate(input: $input) {
        Record { Id, Name { value } }
      }
    }
  }
`;

// Imperative call
const result = await executeMutation({
    query: CREATE_ACCOUNT,
    variables: { input: { Account: { Name: 'Tirnav Solutions' } } }
});
```

### Complex Template Expressions (Beta)
You can finally write inline JavaScript logic in your HTML templates, drastically reducing boilerplate getters.

```html
<!-- Complex Expressions in LWC -->
<template>
    <p>{isPremium ? '💎 Premium Member' : 'Standard User'}</p>
    <p>Total: {items.filter(i => i.active).length}</p>
</template>
```

---

## 6. Security Enforcement: No More Session IDs

In a move to harden the platform, Salesforce will no longer send **Session IDs** with Outbound Messages starting **February 16, 2026**.

**The fix:**
If you depend on two-way integrations via Outbound Messages, you must migrate to **Flow-based approvals** or use **External Client Apps** with OAuth for authentication.

---

## Important Spring '26 Dates

| Phase | Deployment Date |
|-----------|------|
| Sandbox Previews | January 9, 2026 |
| **GA Release Weekend 1** | **February 6, 2026** |
| **GA Release Weekend 3** | **February 20, 2026** |
| Session ID Retirement | February 16, 2026 |

---

## Building the Future with Tirnav

The Spring '26 release emphasizes that the future of the Salesforce ecosystem lies in **Agentic Autonomy**. Whether you're optimizing with **Apex Cursors** or building custom agents with **Agent Script**, the potential for innovation is limitless.

At **Tirnav Solutions**, we help enterprises navigate these complex updates to build faster, more secure, and smarter systems.

**[Contact our experts](https://tirnav.com/contact)** to start your Spring '26 transformation journey today.