Roger Squared is nearly right.
There are, however, three (and a half) to keep an eye on. (1.) The Pilatus PC-12 would work out well. Pressurized retractable, but initial cost is pretty high. Seaport leased some, until they were repossessed. Think Lexus vs Toyota / Caravan. Single PT-6 variant turboprop. (2.) Viking Air of Canada bought the rights and tooling for the Twotter from Bombardier and now makes the 400 series with partial composites, glass cockpit, etc. STOL capability, non-retracting gear (can get floats or skiis !) and tough as a tank. Two PT-6 series turbos. Cost is similar to the PC-12, I think. (3.) The Spanish are still building a version of the CASA 212, definitely in the running for the ugly airplane list, two Garrett turboprops. I'd look carefully at the accident list - seems like a lot of bent metal.
(The half, as in half-built) A
very interesting aircraft to watch is the Italian-designed & (still being) built Tecnam P2012 Traveller. Cape Air has partnered with Tecnam on the design, and has ordered a hundred to replace their aging 402s. Not vapor-ware; this
will happen. High wing twin, piston engines which will run on damn near anything that'll burn, not pressurized, fixed gear, glass cockpit and lots of composites. It even looks Italian (No CASA 212 here!).
First flight later this year. Take a peek: www.tecnam.com/aircraft/p2012-traveller Maybe you can build time on a Vespa for it? Time will tell if it gets a significantly larger market than just Cape Air, but I'm betting on it.
I think you can order a new variant of the B-N Islander from companies in Belgium and Romania (who bought the rights and tooling after several bankruptcies), should you be so inclined. But no Trislander.
None of these are exact replacements for the Caravan, which is probably why Cessna will still sell you a new one. The market is a group of specialized needs, including freight, executive transport , parachuters, smaller EAS, various military roles, search & rescue and medevac, etc. What there is no replacement for, is the Beech 1900 (actually, could use a Twotter or Casa - maybe. Capacity is about the same), except for something in the Soviet Union (or whatever it's being called this week). They'd love to export it for you, but parts might be a problem.