You could have just read Q5 to answer the question for yourself. The last we know of Martin is what he posted on his own HP and the fact that his PayPal account went down. To my knowledge, he hasn't even responded to E-Mails since.
Even so, no emulator has implemented WiFi yet, which cues us to the fact that it's just not that easy.
__________________
No$GBA Quick FAQ:
Q1: Savegame doesn't load.
A: Set correct save type. Look
here, divide by 8!
Q2: "Cannot Read Data" error
A: See above!
Q3: Snapshots?
A: Only work for GBA games.
Q4: NDS linking, NDS with GBA slot, Picto-Chat, trading, ...
A: Not yet available.
Q5: When do we get a new version?
A: We don't know. Martin won't tell.
Q6: Donation down?
A: Yes, and we can't do anything about it either.
Q7: Game stops without appearent cause.
A: Turn the Sound option on.
Q8: No$Zoomer fixes don't work.
A: They do only with 2.6a.