T38G needs new firmware released

[Argento]

YEALINK can you please respond to this post because i don't know what to do.
After a couple of month's were going to purchase IP phones and i'm considering in buying different brand of phones.
I'm afraid that if i buy T46 Yealink phones that the support of that phones eventuelly will end just like the T38G.
If i don't get guarantees then the choice of a different brand seems to be the first logical step!!!
Garantuee it on the T38G first because i don't want to replace the phones that i already have , it cost me a lot of money to purchase the T38G phones. I have 83 T38G phones and i feel hopeless now.