Available immediately, but not everything
Apple released the first iPadOS 27 beta to developers on the same day as the keynote, June 8. Tom's Guide reports that Liquid Glass visual changes are already present and visible, with an interface that feels refined compared to iPadOS 26. However, the most anticipated feature — Siri AI — is not immediately accessible: developers who look for it encounter a waitlist screen, with no specific timeline indicated.
A two-speed beta
This pattern is unusual for Apple, which typically includes at least a working version of primary features in beta 1. The absence of Siri AI from iPadOS 27's initial betas suggests that integration work is still ongoing, or that Apple intends to control access to the feature for infrastructure capacity reasons tied to Private Cloud Compute. Either way, the fall launch remains the expected horizon for general availability.