The main thrust of 6.3 is increased graphical prettiness. In support for that, I've added a bunch of new modules that encourage interestingly-shaped airships.
Large Suspendium Chamber
Highly effective, but the steam engine is so massive that it needs an ocean liner style chimney coming out of the top, which restricts its placement somewhat.
Large Propeller
The same huge engine, here used to drive a propeller.
Large Suspendium Dust Tank
Continuing on the topic of largeness, here is a single massive Suspendium dust tank that provides enough lift to hold up a mid-sized ship. A really cheap way to produce lift, but kind of a bummer when it breaks.
Strut
Want to reinforce and connect parts of your ship? Struts are here for you! Made out of strong steel girders, they're cheap, lightweight and fireproof.
Crow's Nest
Of course, telescopes work rather better for aiming, but if you haven't figured out how to grind those lenses right yet, or are on a budget, putting a guy in a basket at the top of your ship helps too.
Some Examples
So what's left for 6.3? There's a few bugs I want to fix before going live, and I want to integrate these new modules into the AI's ship designs so they get actually used, and then it'll be ready for your delectation.