Hi,
I was running into some WiFi firmware related issues (eg. random lockups) on my Rpi 3B and I was looking for a newer firmware to test and was able to find one at [1] which also included a link to the firmware sources [2]. 
Firmware upgrade did help resolve my issue.
I patched the the firmware package locally to include the newer files and posted it here [3]. 
I would also like to see the newer file officially included. 
Thanks!
Kind regards
[1] 
https://github.com/pftf/RPi3/tree/master/firmware[2] 
https://community.cypress.com/docs/DOC-19375[3] 
https://github.com/atopuzov/alarm/blob/ ... i/PKGBUILDThe versions now:
[   15.118625] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM43430/1 wl0: Feb 16 2020 22:39:24 version 7.45.98.97 (r724416 CY) FWID 01-bf41ed64
[   15.650173] Bluetooth: hci0: BCM43430A1 (001.002.009) build 0508