Both have WiFi b/g, Bluetooth and a A-GPS, along with an FM radio and a microSD card slot. Since Windows Mobile is enterprise-minded, there’s obviously push-email support, and Samsung preload the decent Opera browser since Mobile Internet Explorer isn’t too hot.
The Samsung Omnia Pro 4 will be available from July in European Countries, CIS and South Eastern Asia and Omnia Pro 5 will be available from August in SEA, MEA regions, India and Latin America. No pricing has been announced at this stage.