IPAs are certainly beers that lean towards bitterness. Many balance that bitterness with a lot of residual sweetness, not something Davin wanted. Instead, he wanted to balance the beer by providing a nice fluffy texture by using malted and flaked wheat which also helps showcase the juicy hop aroma and flavor. Hops add bitterness and flavor and aroma, depending on the variety and when they are added to the brew process. Cascade and Centennial hops give Ananda juicy citrus, mango, melon aromas and flavor.
Dry-hopping is the addition of hops after fermentation which is like steeping tea. It has nothing to do with bitterness and everything to do with flavor and aroma. Hops are added directly to finished beer instead of being boiled; which is the conventional method.
Cans are the best method for delivering the best tasting beer to you. Recent breakthroughs in canning liners have eliminated the oxidation of aluminum into beer.