Sony unveiled this week's content updates on the US PlayStation Network via the official PlayStation blogs, and PS Store senior manager Grace Chen began the list with a new addition to the PSOne classic games you can play on the PlayStation 3 and PlayStation Portable. Syphon Filter 3, an oldie but still a goody, can now be had at 6 bucks a piece, though that only nets you one version and not both.

New additions to add-on game content include Guitar Hero III track packs, a Rock Band song library update, and a free downloadable map pack for Army of Two. Ready for your perusal this week is the Enemy Territory: QUAKE Wars demo, which mirrors the PC and Xbox 360 demos in setting and content.

Those who are still wondering what's keeping their MGS4 order long can stave off impatience with the Metal Gear Solid 4: Guns of the Patriots "Theatrical" Trailer, among other trailers for Fatal Inertia EX and Kung Fu Panda. Also to get you into the stealth action mood is a full PlayStation 3 theme for Metal Gear Solid 4, courtesy of Sony.

The content updates, in quick summary, are:

PlayStation Network:

PS1 Classics for PS3/PSP

• Syphon Filter 3 ($5.99); file size: 398 MB

Add-on Game Content

• Army of Two: Veteran Map Pack presented by Pontiac (free); file size: 532 MB
• Guitar Hero III: Isle of Wight Festival Track Pack ($6.25); file size: 44.3 MB
• Rock Band tracks (file sizes: 19.6 MB – 43.4 MB (singles), 89.4 MB (track pack)):
• “Girls Who Play Guitars” - Maximo Park ($1.99)
• “Bullets & Guns” - Them Terribles ($0.99)
• “Moving to Seattle” - The Material ($0.99)
• “A Clean Shot” - The Myriad ($0.99)
• MTV2 Pack 01 ($2.99) - includes “Moving to Seattle” by The Material, “A Clean Shot” by The Myriad, and “Bullets & Guns” by Them Terribles.

Game Demos

• Enemy Territory: QUAKE Wars Demo (free); file size: 1.29 GB

Game Videos

• GameTrailers TV - Resistance 2 Teaser (free); file size: 32 MB (1080p)
• Metal Gear Solid 4: Guns of the Patriots “Theatrical” Trailer (free); file size: 133 MB (1080)
• Kung Fu Panda Launch Trailer (free); file size: 66 MB (HD)
• Fatal Inertia EX Phoenix Trailer (free); file size: 113 MB (HD)
• FIFA Interactive World Cup 2008 (free); file size: 125 MB (HD), 207 MB (1080P)
• Sid Meier’s Civilization Revolution Leader’s Quotes Trailer (free); file size (English): 56 MB (HD), 75 MB (1080); file size (French): 14 MB (SD), 53 MB (HD), 69 MB (1080)
• Hail to the Chimp: Inshellitron (free); file size: 24 MB (HD)

Movie and Blu-ray Trailers

• Hancock Trailer 2 (free); file size: 38 MB (SD), 142 MB (HD), 218 MB (1080p)

PS3 Themes

• Metal Gear Solid 4 Theme (free); file size: 7.73 MB

PS3 Wallpaper

• PixelJunk Monsters Soundtrack Wallpaper (free); file size: 195 KB – 813 KB

PlayStation Store for PC:

Downloadable Games

• Syphon Filter Dark Mirror ($15.99)

PS1 Classics for PS3/PSP

• Syphon Filter 3 ($5.99)

PSP Themes (free)

• Hot Shots Golf Open Tee 2 themes (x2)

PSP Wallpaper (free)

• Syphon Filter Dark Mirror wallpaper (x8)

Game Music (free)

• Syphon Filter Dark Mirror tracks (x9)