Fantastic news!!!
I would have preferred it if Pathi Harn had sired the calf due to his greater genetic significance. However, it is still wonderful news

. Hopefully, Thong Dee is also pregnant and we will get a second pregnancy announcement in a few months.
I believe Thong Dee should have one more calf. As we've seen with Pak Boon's calves, Num Oi's previous calves, and Man Jai, anything can happen! Sabai is still not out of the EEHV danger zone and we cannot guarantee that all 3 ZoosVic calves will survive to maturity (although unlikely).
So as far as I'm concerned only mature descendants (Luk Chai for Thong Dee) (Pathi Harn for Porntip) should count. Which IMO is grounds for Thong Dee to have one more calf.
The only other reason I see TWPZ stopping Thong Dee from having a third calf is spatial related. Things are already tight space-wise at TWPZ and another female calf would put them close to capacity with the matriarchal herd.