There's no announcement of a Retirement Visa just Golden,Investor and Talent.
The $ amounts will probably be set at a ridiculous threshold for the Golden Visa and people rich enough will probably choose a non-Asian country to reside anyway!
Investor visas exist today in VN but the minimum amount has been progressively increasing to around $1m USD currently! Too risky in my view (if I even had the money).
Talent visa meh!