"Technological Enhancement" is not as big an update as I might have hoped, but it will hopefully be followed closely by a "block update" that rounds out the rest of the block textures. Then an item update, and then the dreaded entity update.
Anywho, here's the CHANGELOG; Plenty of stuff here:
New Breaking Animation
New Log Tops
Cow and Pig’s legs look more connected to their bodies.
Changed Steve’s colors to be closer to default. Also gave him a fine pair of shoes.
New UI buttons
Fixed server select buttons
New main title logo and animation
New BG panorama
New enchant glint
New pumpkin overlay
New underwater overlay
Custom particle effect for stone
New empty slot icons
Flint and steel
New beacon textures and edited wave effect
3D fringes for Jungle, Oak, Darkoak, and Birch leaves
NETHER PORTAL 3D EFFECT
Changed up sky/fog colors a bit
Changed Nether ambient light and fog
Various skybox tweaks
New GUI sound
A few new splash texts
Various textures have been extended to 96x equivalent size.
Some blocks and ALL item icons have been touched up by hand.