1.8 is actually a beta, pre-release version. Minecraft's release version was officially launched after that, as 1.0.0, and this has been updated a few times since, it is currently up to 1.2.5. So 1.2.5 is the latest version.
Yes, there are villages in the updated Minecraft Pocket Edition.
Minecraft is no longer in the Alpha stage. It has been updated to Minecraft Beta. Update your Minecraft game client.
Too Many Items or TMI is updated regularly for every new version of Minecraft. If it is not yet released, wait a few days and it will be.
No, they're both equally and regularly updated
Minecraft has already been officially released, but is still being constantly updated.
Minecraft: Pocket Edition was updated to version 0.6.0 on January 30th, 2013.
It supports the Minecraft pocket addition if it is updated to firmware 4.3.
Once.
You need to wait for their server to be updated to 1.3 too.
Nothing will happen if you keep installing and uninstalling Minecraft. Minecraft does not track how many times you have installed it nor does track how many computers you have it installed on. The only drawback is if you uninstall Minecraft by deleting the .minecraft folder you will lose all of your saved worlds on that computer.
If Minecraft hasn't updated for you, you may have to force an update. When Minecraft opens, check the force update option and then log in. That should make Minecraft update for you.