I dont know why people keep thinking it as a ps3 account and ps4 account. Our account is not link or does it have anything to do with the console. Its called PSN account, aka playstation network account, and it is use for all Playstation systems, psp, ps vita, ps3, ps4, ps5, ps6, ps7 and so on. So guys, stop calling it ps3 and ps4 account, and stop thinking that your current account wont work for the ps4, cause its not a ps3 account, its a PSN account and yes you will use the same account on your new ps4, unless you decided to created a new PSN account.
Customer Service - 1-800-345-SONY (7669)
Account & billing Support -1-877-971-SONY (7669)
Available Mon to Fri 8am - 8pm PST
Live Chat Available Mon-Sat 6am-10pm PST & Sun 6am-8pm PST