Changes since the public beta:

* Share your photos using the Behance Publish Service
* Expanded the range of Radial Filter’s feather slider
* Over 400 bugs found and fixed! (Thank you Lightroom 5 beta customers!)

New Camera Support in Lightroom 5.0

- Hasselblad H5D-60
- Olympus PEN E-P5
- Olympus PEN E-PL6
- Panasonic LUMIX DMC-G6
- Panasonic LUMIX DMC-LF1
- Phase One IQ260*
- Ricoh GR

New Lens Profile Support in the Lightroom 5

- Canon PowerShot G1 X Canon
- Canon PowerShot G15 Canon
- Hasselblad HCD 4.8/24 Hasselblad
- Nikon Coolpix A Nikon
- Nikon Coolpix P330 Nikon
- Nikon AF-S Nikkor 80-400 mm f/4.5-5.6G ED VR Nikon
- HD Pentax-D FA645 Macro 90mm F2.8ED AW SR Pentax
- HD Pentax-DA 560mm F5.6ED AW Pentax
- Sigma 30mm F1.4 DC HSM A013 Canon, Sigma
- Sigma 17-70mm F2.8-4 DC Macro OS HSM C013 Nikon
- Sigma 19mm F2.8 DN A013 Olympus, Sony
- Sigma 30mm F2.8 DN A013 Olympus, Sony
- Zeiss Apo Sonna T* 2/135 ZE Canon
- Zeiss Apo Sonnar T* 2/135 ZF.2 Nikon
- Zeiss Touit 1.8/32 Sony
- Zeiss Touit 2.8/12 Sony

System requirements

* Intel® Pentium® 4 or AMD Athlon® 64 processor*
* DirectX 10–capable or later graphics card
* Microsoft® Windows® 7 with Service Pack 1 or Windows 8
* 2GB of RAM (4GB recommended)
* 2GB of available hard-disk space
* 1024x768 display
* DVD-ROM drive required if purchasing Adobe® Photoshop® Lightroom® retail boxed version
* Internet connection required for Internet-based services†

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Homepage :  
https://www.adobe.com/products/photoshop-lightroom/features.html