As Opera confirmed that Opera 11 will have extensions are u thinking that Opera 11 will be released after next major release of Opera 10.7o  which is currently under development its not the case you don’t need  to wait too longer for arrival of Opera 11,  Opera confirms that Opera 10.70 final will not be shipped and the upcoming Opera 11 alpha will be based on current Opera 10.70 builds .

Current Opera version is 10.63, we don’t know when Opera going to release Opera 11 alpha version.