Although the squad for the event is likely to be announced on October 7, the passports of the 22 probables have already been sent to the Canadian High Commission for visas.
However, the Pakistan Cricket Board (PCB) official said Shoaib's passport was yet to be received since he was playing for Surrey in England and it could only be sent to the High Commission after his return.
Meanwhile, national selectors will watch Shoaib's performance during the national Twenty20 tournament, to be held here from October 4-8.
The selectors are also waiting to see if they can choose Shoaib.
The PCB has sought a ruling from the Lahore High Court on whether Shoaib can play in, or for, Pakistan without having paid an outstanding fine of 7 million Pakistan rupees (89,514 dollar) imposed by the PCB for the paceman's disciplinary breaches and public criticism of the board.
The PCB has allowed Shoaib to compete in the domestic Twenty20 tournament as the board did not want to mix legal and cricketing issues surrounding the paceman.
''We don't want to mix legal and cricketing issues and Shoaib can play in the Twenty20 tournament from October 4,'' PCB's Chief Operating Officer Shafqat Naghmi said.
Pakistan, Canada, Zimbabwe and Sri Lanka will compete in Toronto, October 10-13, Twenty20 tournament.