Swirly-Twirly is a simple, widget ready, three column, bright, swirly theme.

Siteground has a growing collection of WordPress themes.

Themeorrhea is a clean, two column theme with white, green and blue color scheme.

Neonix is a single column, fixed width theme by Thilak with a green color scheme. Preview.

BBRose is a two column, fixed width rose theme by Kapikua.

Blue Steel is a three column, fixed width, widget ready WordPress theme by Milo. Also check out Summer.

Zero is a simple one column WordPress theme.Gray Wolf is a simple yet powerful XHTML 1.0 Strict theme for WordPress with support for gravatar, wp page navi and widgets. Preview.

Nonzero Red is a new three-column, fixed width widget ready WordPress theme.

Small Potato has released Half Life, WPD Expanded, Patriotic and Signs.

Infinito is a two column, brown scheme theme for WordPress.

Purple Sky is two column, fluid width, widget ready theme. Preview.

Redoable 1.1 is a two/three column hybrid version of K2 with lots of features built in. I really like the middle column asides and the colors are interesting.

wpjeriko01.2 is a two column, widget ready theme for WordPress with rounded edges and featured posts. There are two color options available for this theme and there are screenshots and previews available at the link.

Bloody Gray is a light two column theme with shades of red and gray.

BBT is a two column theme with a blue scheme.

Say It 2 is a light weight, two column theme with a dynamic color chooser.

Petlover is a 2-column,widget-ready,fixed width theme that is based on a design by WDD.

Natheless is a simple two column Preview.

Red Matrix Pill is a widget-ready, one-column, WordPress-style, half-hearted adaptation of the red pill in the movie The Matrix. Preview.

Greenery is a green two column widget ready theme for WordPress.

Pinky is a pink color schemed, single column WordPress theme. Preview.

Vertigo Enhanced is a modern, 3-column Widget-ready theme by Brian Gardner. Preview.

Online Pages is a two column theme with a brown color scheme and fluid width by Rosemarie Pritchard.

Ds rosa is a two column pink and white theme. Preview.

Sharepoint Buzz is a wide, two column, reverse Hemingway theme for WordPress in blues and whites. It has a very distinct tech forum feel to it.

Digg-ish is a two column hybrid theme for WordPress with a lot of possibilities. The heading and date backgrounds have the Digg like rounded, faded effect and thus the name. Preview Digg-ish here.

HAL is a three column fluid layout, widget ready with a custom header and support for Sweet titles and IBox.

Bluish Cloud is a 2 column wordpress theme design, with the appearance of a blue sky by WP Theme Gallery.

Small Potato has released See You At The Beach and Total Liquidation

GlossyBlue is a theme with high-tech glossy Mac style with Web 2 Mini icons.

Intra Blog is a two column theme based on a template from Template World.

TheTapestry.org has released three themes viz. New Wave, Trust in the Lord and Harvest is Ready.