What is the current version of the 802.11r standard

Any idea what's going on with this standard?

It was superceded by 802.11-2012.

In 2007, task group TGmb was authorized to "roll up" many of the amendments to the 2007 version of the 802.11 standard. REVmb or 802.11mb, as it was called, created a single document that merged ten amendments (802.11k, r, y, n, w, p, z, v, u, s) with the 2007 base standard. In addition much cleanup was done, including a reordering of many of the clauses. Upon publication on March 29, 2012, the new standard was referred to as IEEE 802.11-2012.

GET IEEE 802®: LOCAL AND METROPOLITAN AREA NETWORK STANDARDS - This is a link to fill out a form

802.11-2012

IEEE Website Page

Any idea what's going on with this standard?

It has been incorporated into 802.11-2012.

802.11-2012 Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications

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This revision gives users, in one document, the IEEE 802.11 standard for wireless local area networks (WLANS) with all the amendments that have been published to date.

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The current revision, IEEE Std 802.11-2012, incorporates the following amendments into the 2007 revision:

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• IEEE Std 802.11r™-2008: Fast Basic Service Set (BSS) Transition (Amendment 2)

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Source 802.11-2012 Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications

Note:

• PDF can be downloaded from the above link.

I ran across these IEEE links where 802.11-2012 (maintenance ceased) has been superseded by:

802.11-2016 Standard (Currently Maintained)

Which has in turn been superseded by:

802.11ai-2016 Standard (Currently Maintained)