The court case Smith College brought against Harriet Rosenstein concerning the fourteen letters from Sylvia Plath to Dr. Ruth Beuscher was settled on 27 December 2017. The court case docket number is/was 1784CV00769-BLS; the case was dismissed with prejudice, the outcome of which was negotiated between the two sides. Anyone can visit the courthouse and review the records generated in the case. In the settlement, Rosenstein surrendered the letters she had been a custodian of since the early 1970s to Smith College. I have known about the fate of these letters since early January 2018 and that they would be allowed in the second volume of Plath's letters shortly thereafter. I must, at this point, apologize to anyone and everyone who has asked me about them for I have lied my face off. But you have to understand, please, that I was expressly forbidden to discuss this matter. However, as of 6 September 2018, when the second volume of The Letters of Sylvia Plath was published in...
Sylvia Plath Info Blog by Peter K. Steinberg. The blog of A celebration, this is.