I am fairly confident that I have not received 'Pineberry' seeds. The familiar seeds of the Pineberry (that you can see from any google images search) are a striking and vivid red contrasting the creamy white flesh. The seeds I have received are a yellow-brown colour, very similar to the White Alpine Strawberries I am also growing this year.
Further research shows that even if they were Pineberry seeds, they wouldn't be successful:
"With the popularity of the Pineberry increasing because of its unique qualities, some less scrupulous people are renaming any white strawberry they find as the Pineberry. Pineberries are a hybrid (Fragaria x ananassa), and will not grow true from seed."