the TTSH v4 is the same Version like TTSH rev.3 - but with small bugfixes.
The TTSH v4 is only available by synthcube - Kits, Fullkits, cases - mostly  everything you want.
https://synthcube.com/cart/ttsh-v4
Known Issues:
the Pinout of the Dual JFET 2N3958 in the VCO2 section (mainboard) is still available.
i build in next days a v4 and report here more infos