The Intel Customer Support folks do not have access to distribution channel data, so cannot answer this question. You need to check with your local retailers for schedule.
I would add that, once a processor goes into production, it typically takes 3-4 weeks for units to work their way through the distribution channels and arrive on store shelves. If a processor is in limited availability, it may take even longer. Intel has no control over how channel distributors may choose to distribute the processors that they do receive.