Note that at least with SMW Advance, there was different content to justify a rerelease of that version. With ALttP GBA the only added content is Four Swords which is unusable because they didn't bother to include any multiplayer workarounds in their GBA emulator. So they'd want to literally rerelease the exact same thing twice.* I wouldn't count on that. What you can count on, though, is that another sale will be happening with ALttP in it so no need to rush into anything (unless you want DDP/PP for it).
edit: *=UNLESS they're really psyched about the Ocarina of Time noises that Link makes in ALttP GBA