Panic, makers of Transmit, Unison and other products, announced Monday the forthcoming release of Coda 2, a new version of their Web editor for Mac OS X. They also introduced Diet Coda, a companion software app for the iPad. Both are coming Thursday, May 24th.

Coda 2 – a paid upgrade for users who purchased Coda more than a month or so ago – adds new features, an overhauled UI and more. The list of new features is too long to reproduce in its entirety here, so make sure to visit the Web site for details. But standout features include code folding support in the editor; new visual tabs in the interface; a new customizable sidebar; better file management, with support for Git; the ability to assign keyboard shortcuts; visual CSS editing with GUI pop-ups; a brand-new MySQL editor; better validation and more. Panic counts more than 100 new features all told.

A feature called AirPreview helps Coda for Mac tie into the companion Diet Coda app for iPad. You can use your iPad as a preview device.

Diet Coda is a Web code editor aimed specifically at iPad users. Features include fast syntax highlighting, remote-only editing using FTP or SFTP, Transmit-style file management, the Air Preview feature when used with Coda for Mac, “clip” support (for snippets of code) and more. It’s priced at $9.99.

Both will be on sale for 50 percent off during the first 24 hours of release, on Thursday, May 24.