No this is not an April joke, In January 2010, we could see that 24 IPv4/8 blocks were unallocated. In February two more /8 blocks were allocated and by 9 April 2010, there are only 20 IPv4/8 blocks are available, this means that only 7,81% of the total IPv4 /8 blocks are available now. I do really hope that this will convince companies which are not prepared for the IPv6 implementation.
The following graph shows that only 20 of useable IPv4 /8 blocks are available. For full size view please click on the following graph