I don't think i can post html links but the website for the British Waterways states:

"Completion of the canal link construction is planned for autumn 2008, with the Pier Head section finished earlier in July. However, the date for the opening of the link to navigation will be dependent on progress of the new developments near Princess Dock and at Mann Island as the canal is completely integral with these."

it was supposed to be ready for the capital of culture year - but they didn't even drain the canal til late October/early november 2007!