Will sorcerer only be limited to lightning based destruction magic or can it use fire and frost as well if not does the Templar basically have fire destruction magic with its sun abilities and what not?

Sorc seems to be focused primarily on Summoning, Lightning magic and "Dark" (I figure a mix of schools rolled into one tree). The schools as they are in the single player games aren't really a thing back in this period that TESO takes place, but there will be fire and ice magic around. That's about all we can really say for now.

Okay so then does that mean they will role with another mage template or be available to all classes or what?

One or the other. The info isn't released yet.

Okay thanks moderated when you see this you can close it