<p style='text-indent:20px;'>In a bounded domain, we consider a thermoelastic plate with rotational forces. The rotational forces involve the spectral fractional Laplacian, with power parameter <inline-formula><tex-math id="M1">\begin{document}$ 0\le\theta\le 1 $\end{document}</tex-math></inline-formula>. The model includes both the Euler-Bernoulli (<inline-formula><tex-math id="M2">\begin{document}$ \theta = 0 $\end{document}</tex-math></inline-formula>) and Kirchhoff (<inline-formula><tex-math id="M3">\begin{document}$ \theta = 1 $\end{document}</tex-math></inline-formula>) models for thermoelastic plate as special cases. First, we show that the underlying semigroup is of Gevrey class <inline-formula><tex-math id="M4">\begin{document}$ \delta $\end{document}</tex-math></inline-formula> for every <inline-formula><tex-math id="M5">\begin{document}$ \delta>(2-\theta)/(2-4\theta) $\end{document}</tex-math></inline-formula> for both the clamped and hinged boundary conditions when the parameter <inline-formula><tex-math id="M6">\begin{document}$ \theta $\end{document}</tex-math></inline-formula> lies in the interval <inline-formula><tex-math id="M7">\begin{document}$ (0, 1/2) $\end{document}</tex-math></inline-formula>. Then, we show that the semigroup is exponentially stable for hinged boundary conditions, for all values of <inline-formula><tex-math id="M8">\begin{document}$ \theta $\end{document}</tex-math></inline-formula> in <inline-formula><tex-math id="M9">\begin{document}$ [0, 1] $\end{document}</tex-math></inline-formula>. Finally, we prove, by constructing a counterexample, that, under hinged boundary conditions, the semigroup is not analytic, for all <inline-formula><tex-math id="M10">\begin{document}$ \theta $\end{document}</tex-math></inline-formula> in the interval <inline-formula><tex-math id="M11">\begin{document}$ (0, 1] $\end{document}</tex-math></inline-formula>. The main features of our Gevrey class proof are: the frequency domain method, appropriate decompositions of the components of the system and the use of Lions' interpolation inequalities.