Should I hurry to migrate AE tokens to AE address? As I see there will be several phases. So we have more than enough time for it.
you are right. But you'd better migrate before mainnet, because the next opportunity is several years later and need hard fork which take a little risk.
Actually, the next opprotunity will be the first hardfork after Mainnet launch - February 2019. However, I would also suggest migrating before Mainnet launch.
Best,
Vlad