The new “version III” 1.4x and 2x Canon teleconverters, which were announced back in August, should be available very soon. B&H Photo has them available for pre-order, which is synonymous with “they should be in stock any day now.”
Check availability on their respective product pages below.
‘got my EF 1.4x iii from the canon dealer in Anchorage a week ago. ZIt is much better than the series ii