Revision 5 of the XPERIA X1 White Paper is now out containing a lot of bad news. It seemed like no one noticed that revision 4 came out earlier this month but in any case, I’ve compared the docs line-by-line, and here’s a summary of what has changed since revision 3:

• Front camera can take still images at QVGA
• Slideshow Panel removed
• Java applications support OMA DRM 1.0 forward lock and combined delivery only
• Digital zoom specs added:
  • 3MP mode – 1.0 x fixed
  • 2MP mode – 1.0 x to 1.29 x
  • 1MP mode – 1.0 x to 2 x
  • VGA/QVGA mode – 1.0 x to 3.2 x
• Opera Mobile 9.5 browser specs added:
  • HTML - 4.01 (with some exceptions)
  • XHTML - Basic, 1.0, 1.1 (both with some exceptions)
  • XHTML Mobile Profile 1.0, 1.1, 1.2 (with some exceptions)
  • WML 1.3, 2.0 (both with some exceptions)
  • CSS - Level 1, Level 2 (partial), Mobile Profile 1.0, Wireless (WAP) CSS 1.0, 1.1
  • XSLT 1.0, XPath 1.0, XML Namespaces, XML ID, XML Events
  • Scripting/DOM - JScript 5.6, DOM Level 0, DOM Level 1 (partial), DOM Level 2 (partial)
  • Full HTML support, JScript, Progressive download of video files
  • Direct access to Search Internet and Enter address
• Standby Time
  • GSM: 500 hours (formerly 580 hours)
  • UMTS: 640 hours (formerly 833 hours)
• Talk Time
  • UMTS: 6 hours (formerly 6.5 hours)
• Wireless LAN - IEEE 802.11b/g compliant
• Video encoding - H.264 removed
• Added video support for .3g2 and .m4v
• Audio Encoding - AMR-NB (formerly AAC, AAC+, EAAC+)
• Camera Effects - Solarization added
• Picture Quality - Economy added
• Video clip length - up to 30 minutes (formerly TBD)