Similarly, the 'j' in some regions can be pronounced very hard as well.
Also, many other regional differences exist:
1.) in Argentina it's common to pronounce the double l ('ll') as 'sh' (ella => esha), or
2.) in Spain the 'z' is usually pronounced as 'th' (corazón => corathón;
2a.) see Enrique Iglesias' "Duele El Corazón" -- and to top it off his guest artist Wisin pronounces it corazón!).