Timeline for 26A proposals (dates in 2025), v2.2:

Jun 06, Fri, Pre-Announcement
Jun 25, Wed, CfPs, release PST et al.
Jul 30, Wed, proposal deadline
Aug 05, Tue, release proposals for individual reviews
Aug 26, Tue, complete individual technical reviews
Aug 28, Thu, complete individual science reviews
Aug 29, Fri, release information to most SRPs
Sep 03-05, Wed-Fri, SRP Meeting window 1
Sep 08-12, Mon-Fri, SRP Meeting window 2
Sep 17, Wed, finalize SRP business & linearize scores
Sep 19, Fri, release Large proposal info to TAC
Sep 19, Fri, Large Proposal Report Deadline (VLA/VLBA only)
Sep 29, Mon, release scores, priorities, plots to TAC
Oct 03, Fri, Large Proposal Meeting (08:00-11:00 EDT)
Oct 06, Mon, complete individual technical reviews (VLA/VLBA)
Oct 08, Wed, release updated priorities, plots to TAC
Oct 14-15, Tue-Wed, TAC meeting (CV)
Oct 31, Fri, release info for Director's Review
Nov 04, Tue, Directors' Review (14:00-17:00 ET)
Nov 12, Wed, post TAC report; email disposition letters
Nov 19, Wed, post Science Program for 25A
Dec, wrap-up article for NRAO eNews 

Important Dates:
NSF AAG Proposal Window: 01 Oct 2025 - 15 Nov 2025