Upcoming Hiby WH2 TWS is already LDAC certified. Should be no problem squeezing into UTWS5 if its all about LDAC licensing fee
Hiby actually tried implementing LDAC on its WH3 last December via a beta firmware, but it was pulled out in the final release. Reliable source told me that the LDAC implementation that Hiby was using in WH3 then was actually more of a a trick rather than an actually implementation as they used a separated chip to connect to the source via LDAC, but re-transcoded back to a lower end codec in TWS mode so you won't actually benefit from LDAC anyway. I hope they are not trying to pull the same trick over WH2 again.