游戲網站1UP中有一段PSP-4000/PSP2的流傳, 留言中提到了以下的訊息:

Many have speculated that the update would be called either the PSP 2 or PSP-4000, but our sources claim Sony will forgo a numerical moniker in favor of a subtitle. We’ve heard various rumored code names for the project (including PSP Slide, PSP Flip, and PSP Go!), but given that Sony has introduced the Go! brand of add-ons (the Go!View video-on-demand service and 1.3 megapixel Go!Cam) for the European PSP, it seems likely that the new system will in fact be called the PSP Go! Our sources further confirm that this redesign will be available in two SKUs, with either eight or 16 GB of built-in flash memory. The system is set for release in Japan this September with a U.S. debut coming in either late October or early November.

In addition, since the UMD is going away, Sony will have over 100 classic and new PSP titles available for download at launch (Gran Turismo Mobile is said to be one of the premier launch titles). As for the hardware itself, the redesign will include a d-pad, analog nub, and face buttons as part of a sliding unit sticking out below the screen (as seen in our mockup above). Unfortunately for those looking for twin-stick shooter controls, the new system will not have a second analog stick, but instead will remain consistent with the current control configuration.

重點翻譯:
- 雖然大多玩家都認為新機種將被稱為PSP 2或PSP-4000, 但也許Sony這次會更改以往常用的命名方式. 當中有人亦提出過名字如: PSP Slide, PSP Flip, and PSP Go!等.
- 有鑒于歐洲地區所推出的品牌Go!系列的PSP外置產品 (如Go!View視頻服務和Go!Cam 1.3M鏡頭等), 新版的PSP也有機會被名為PSP Go!.
- 新版PSP也許包括16GB的內建容量, 預期日本會在九月份推出, 美加地區約在十/十一月推出.
- UMD也許會被移除, Sony也許會把百多種經典游戲以網絡供玩家下載 (Gran Turismo Mobile也是被提到).
- 按鍵方面與現有的大同小異(d-pad,控制桿,圖形鍵, L/R等 – 沒有雙控制桿), 但按鍵將在畫面之下 (如圖).

這些消息都尚未由Sony官方/E3證實, 還是有待時間來驗證吧. 有興趣查看來源網頁.

來源: 參看網頁 (1UP)