back on Neogaf discussing weapon times and how they are used, giving us a glimpse of what to expect.
"You cannot start with snipers whenever you want. (unless you are playing a sniper mode) The weapon drops are not "random." They are telegraphed and in some ways, predictable. There is variation, however. Map control will still be key, but yes, changed. Custom games will be heavily customizable, and initial playlists will be clean and focused. Players will not be presented with stacksof lists, but there will be variety for different tastes."
Halo 4 tidbit - "You cannot use Forerunner Vision to see players anywhere on the map. Absolutely not. " - Frankie
Found these on twitter. https://twitter.com/#!/TheHaloCouncil