These NRF24L01+ boards may have been out a while, but I have only recently seen them
Firstly, THIS ONE : it looks like a standard PA/LNA version but with the exceptions that it has no 8 pin header attached - the connections are edge-plated. Also the PCB antenna is a ceramic SM type. I have one of these on order to test, but I quite like the idea of NOT having the antenna externally and if this can provide good performance I may consider this in new designs
The second board HERE looks like a re-design of the standard NRF24L01+ cheapy. as above the header has been replaced with in-line edge-plated connections, the IS is CoB and the crystal now looks like a watch crystal. Other than that I would imagine the performance to be the same, its just nice to see a new alternative ! The older boards of this type were 15x29mm, these seem smaller !
I would imagine they would both be available from AI and Baite at some point
I have only found the ceramic-on-board version available on eBay at the moment