I don't "know" their plan but some have been told they are looking at starting the next generation earlier than 2028 and not be in the same yearly cycle as Sony, at least its been put on their round table
But who knows where things will be even next year at this time
Speculative theories of some without any basis and misinterpreting P. Spencer's words about the convenience of XSeries PRO "RIGTH NOW".
1-The most solid information is the FTC vs MS/ABK docs. They foresee a new generation for 2028.
They also emphasize the need to be more flexible with the characteristics of the hardware than it already is and not focus only on a fixed one and to make it more similar to the Windows PC model.without losing the benefits of development for fixed hardware.
That tells me that they are open to launching more models with different specifications and that there is already a plan.
2-Phil did not categorically deny the possibility of an XSeries Pro, he only spoke in terms of the present. Imagine announcing the development of a new model 2 years before it is launched...

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If there is a plan for an XSeries Pro, it will certainly not be announced today and that will cause damage to sales of the current models. Whether or not there is a plan to launch an XSPro, we will know when Sony announces its PSPro, not before.