Just last week we heard that Lenovo had quietly refreshed the entry-level ThinkPad SL series with the SL410 and SL510. LaptopMag even got ahold of an SL510 and found it was actually rather evolved from the SL500, with a refreshed design and 16:9 ratio LCD.

Lenovo finally went official on these and you can now buy them at Lenovo.com (in the US at least) and below are the specs. Sounds like a decent box, but Lenovo really seems to be crowding the $500-800 space.

Specs and images after the jump

THINKPAD SL410 / SL510

• Intel® Core™2 Duo with 1066 MHz FSB (Dual Core Celeron also offered)
• Genuine Windows®7 or Genuine Windows® XP
• SL410: 2.32 kg / 5.11 lbs with 6 cell battery; (32 – 36) mm x 344 mm x 233 mm [(1.26" -1.42") x 13.54" x 9.17"]
• SL510: 2.56kg / 5.64 lbs with 6 cell battery; (32 -36) mm x 380mm x 247mm [(1.26" -1.42") x 14.96" x 9.72"]
• 14.0″ HD VibrantView (16:9) (SL410)
• 15.6″ HD VibrantView or Antiglare (16:9) (SL510)
• LED Backlit Displays
• Integrated Intel® X4500 graphics
• DDR3 1067MHz (Up to 8GB)
• Up to 500 GB 5400 rpm or 320GB 7200 rpm with APS
• Video output – HDMI, VGA
• 12.7mm DVD Recordable
• WWAN – Integrated Mobile Broadband; WLAN – 802.11n draft; WiMax; Bluetooth®; Gigabit Ethernet (10 / 100 / 1000)
• Spill Resistant Keyboard
• TrackPoint® and UltraNav™ Touchpad with multitouch
• Microphone mute button on keyboard
• Integrated 2 MP Camera (select models)
• Integrated Fingerprint Reader
• 4, 6 or 9 Li-ion battery