An official announcement, or even invitations from Apple it’s not though. If we are not wrong so Apple iPad was launched on 27th of January. Now see this amazing piece of a hint.
On left is the picture of the iPad before Launch and on the right it the new one on iOS4.3b2 which is about to be Launched. So the date on the right is 9th of February. So we can expect a presentation of iPad2 on 9th of February. check back soon for more updates.