TNPSC's press release says certificate verification and counselling for Group IIA posts of the 2025 cycle (Notification 11/2025) will be held from 29 September to 1 October 2026 at the TNPSC office in Chennai. Call letters are on tnpsc.gov.in; candidates are informed by SMS and e-mail only, not by post. This is separate from the 2026 cycle, whose Group II and IIA preliminary exam is on 1 November 2026.
Source: tnpsc.gov.in