FYI got an update on the issue, WD replied me:
We are currently manufacturing these drives, and we will be shipping them out worldwide through various distribution channels. Depending on which distributors source your region, will determine how long it takes for the drives to stock stores in your area. Unfortunately, we don’t have the specifics on when drives may show up in your city. All we can say, at this moment, is that they are on the way. I would consider keeping an eye out for stock showing up in online stores that service your region, as well.
Link to other forum thread: http://community.wdc.com/t5/Off-Topic-Discussions/Delivery-issues-regarding-WD10EFRX-WD20EFRX-amp-WD30EFRX/m-p/473122
