zimcricketnews.com

The ICC have completed their annual update of the Test rankings, where the 3rd year's matches drop out of the calculations. This leaves Zimbabwe with less than the 10 minimum ranking matches withing the calculation period (they have 8), so they drop out of the table for the time being.

Those 8 matches are still valid and recorded, though - should Zimbabwe somehow manage to play 2 Tests between now and next August (unlikely, but still...), they would be reinstated to the table with most of their points intact.

Bangladesh, meanwhile, benefit from their oldest matches being removed to the tune of 4 points, meaning that they weren't in the unfortunate position of having no points for long.

An update of the ODI Rankings is also due before 1st August. Expect Zimbabwe to lose out on that front, as well...
ICC Test Rankings