Wow - so I killed a zombie; looted a loot bag - opened the loot bag, and there was a portal gun in it. Seriously? (using 0.6)
That should be fixed in 1.6+. Mojang is releasing a API specifically for mods. I thought one of the dev's said that that means, a 1.6 mod will work in 2.9 (for instance) - but don't quote me on that. They did for certain tho, say that it'll be really easy to update and tweak mods.
Whoa there, don't go spreading information you haven't confirmed. The rumors are bad enough as it is.
1.6 is Quoted as being a major step towards the Plugin API but it's not going to be ready any time soon. Definitely not for 1.6.
http://www.reddit.com/r/Minecraft/comments/1c7drz/either_im_crazy_or_this_means_soundpacks/c9e0g6a
In regards to the new launcher.
"Very much required for the future of the game, and an incredibly big step towards the mod API."
Keep an eye on these two wiki pages for a quick an easy guide to what's going on and what's upcoming.
http://www.minecraftwiki.net/wiki/Version_history/Development_versions
http://www.minecraftwiki.net/wiki/Upcoming_features