ccTLD not assigned

I just read about the country code Top-Level Domain for SAINT BARTHÉLEMY to be assigned soon (not sure wether this is true or not): the unassigned .BL domain name extension.

Checking the list of ccTLDs at IANA, I found that more ccTLDs are not assigned neither:

• The .BQ for BONAIRE, SINT EUSTATIUS AND SABA;
• The .EH for WESTERN SAHARA;
• The .MF :-) for SAINT MARTIN (FRENCH PART);
• The .SS for SOUTH SUDAN;
• The .UM for UNITED STATES MINOR OUTLYING ISLANDS.

Some IDNs are not assigned yet neither.